MagnaFlux Zyglo ZL-37 Level 4 Post Emulsifiable Fluorescent Penetrant

ZL-37 is a highly sensitive Type 1 penetrant crucial for detecting fine defects in critical components like titanium turbine parts and high-stress investment castings. Its non-water-soluble nature minimizes the risk of washing away from shallow defects, ensuring the most reliable penetrant testing method. With a high flash point, it offers extended tank life in dip tank applications and can also be applied via electrostatic spray.

Removal options include ZE-4E Method B for lipophilic emulsification or ZR-10E Method D for hydrophilic emulsification.

ZL-37 is qualified under QPL SAE AMS 2644 and approved by Pratt & Whitney for use.

Improve indication detection in the most critical applications

• Creates the clearest, brightest indications for even the finest flaws due to very strong UV and thermal stability

• Highest fluorescent brightness of any Level 4 penetrant for high-contrast indications that are easy for inspectors to see – even when the indications are very small

• Indications stand out more since background fluorescence is minimized; emulsifiers only remove surface penetrant without the risk of over-washing

Maximize penetrant inspection process control

• Prevents over-washing since ZL-37 cannot be removed with water (unless combined with an emulsifier)

• Post Emulsifiable penetrant system is less susceptible to human error since only surface penetrant is removed in the final rinse stage

Wide range of inspections

• Inspect a wide range of high-value components without fear of corrosion or specification non-conformance

• Meets all major industry and NDT specification requirements, including Aerospace Prime and OEM specs, AMS 2644 and ISO 3452

Due to shipping regulations, aerosols must ship via ground delivery.

Product Data Sheet

Liquid Safety Data Sheet

Aerosol Safety Data Sheet

• Level 4 ultra-high sensitivity

• Post emulsifiable

• Bright, high-contrast indications

• Resists over-washing or over-removal

• High flash point

• Wide range of application methods

• Low odor

• Very low toxicity

• Alloy compatibility

• Very high thermal resistance

• Very high UV stability

• High dye content

• QPL SAE AMS 2644 Qualified Product List

• Approved for use by Pratt & Whitney